18-Mbit (512K x 36/1M x 18) Flow-Through SRAM
CY7C1381D, CY7C1381F
CY7C1383D, CY7C1383F
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
, CA 95134-1709
•
408-943-2600
Document #: 38-05544 Rev. *F
Revised Feburary 07, 2007
Features
• Supports 133 MHz bus operations
• 512K × 36 and 1M × 18 common IO
• 3.3V core power supply (VDD)
• 2.5V or 3.3V IO supply (VDDQ)
• Fast clock-to-output time
— 6.5 ns (133 MHz version)
• Provides high performance 2-1-1-1 access rate
• User selectable burst counter supporting Intel® Pentium®
interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self-timed write
• Asynchronous output enable
• CY7C1381D/CY7C1383D available in JEDEC-standard
Pb-free 100-pin TQFP, Pb-free and non Pb-free 165-ball
FBGA package. CY7C1381F/CY7C1383F available in
Pb-free and non Pb-free 119-ball BGA package
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• ZZ sleep mode option
Functional Description [1]
The CY7C1381D/CY7C1383D/CY7C1381F/CY7C1383F is a
3.3V, 512K x 36 and 1M x 18 synchronous flow through
SRAMs,
designed
to
interface
with
high-speed
microprocessors with minimum glue logic. Maximum access
delay from clock rise is 6.5 ns (133 MHz version). A 2-bit
on-chip counter captures the first address in a burst and
increments the address automatically for the rest of the burst
access. All synchronous inputs are gated by registers
controlled by a positive edge triggered clock input (CLK). The
synchronous inputs include all addresses, all data inputs,
address pipelining chip enable (CE1), depth-expansion chip
enables (CE2 and CE3 [2]), burst control inputs (ADSC, ADSP,
and ADV), write enables (BWx, and BWE), and global write
(GW). Asynchronous inputs include the output enable (OE)
and the ZZ pin.
The
CY7C1381D/CY7C1383D/CY7C1381F/CY7C1383F
allows interleaved or linear burst sequences, selected by the
MODE input pin. A HIGH selects an interleaved burst
sequence, while a LOW selects a linear burst sequence. Burst
accesses can be initiated with the processor address strobe
(ADSP) or the cache controller address strobe (ADSC) inputs.
Address advancement is controlled by the address
advancement (ADV) input.
Addresses and chip enables are registered at rising edge of
clock when address strobe processor (ADSP) or address
strobe controller (ADSC) are active. Subsequent burst
addresses can be internally generated as controlled by the
advance pin (ADV).
The
CY7C1381D/CY7C1383D/CY7C1381F/CY7C1383F
operates from a +3.3V core power supply while all outputs
operate with a +2.5V or +3.3V supply. All inputs and outputs
are JEDEC-standard and JESD8-5-compatible.
Selection Guide
133 MHz
100 MHz
Unit
Maximum Access Time
6.5
8.5
ns
Maximum Operating Current
210
175
mA
Maximum CMOS Standby Current
70
70
mA
Notes:
1. For best practices or recommendations, please refer to the Cypress application note AN1064, SRAM System Design Guidelines on www.cypress.com.
2. CE3, CE2 are for TQFP and 165 FBGA packages only. 119 BGA is offered only in 1 chip enable.
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